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On the heels of Beyonce's sneak peek Instagrams promoting her much-hyped halftime performance, fellow Destiny's Child member Michelle Williams is shooting down rumors of a possible reunion during the show, saying the unconfirmed reports are "not true."

Beyonce Performs the National Anthem

Pop star Beyonce performs the National Anthem at President Barack Obama's second inauguration. After the performance, there have been questions about whether the singer lip-synced. (Published Wednesday, Jan 23, 2013)

"I'm going to be in the musical Fela!" she recently told WRUG Media in an interview. "I hate to disappoint the people and tell them that it's not true."

Style Evolution: Beyonce

Williams is headlining a world tour of the famed musical, and according to the show's website, she'll be performing at Washington's Sidney Harman Hall at 3 p.m. and 8 p.m. on Super Bowl Sunday.

Tabloid reports surfaced last week claiming Michelle and Kelly Rowland would join Beyonce on stage at the New Orleans' Superdome Feb. 3 to perform a medley of their greatest hits, but Williams insists that's just not the case.

"I'm so sorry. I'm so sorry," Williams said. "But we did record a song with each other before the holidays."